Filter and heat exchanger



Jan. 19, 1937.- ,R. N. BURCKHALTERETAL FILTER AND HEAT EXCHANGER 3 Sheets-Sheet l Filed July 21, 1932 19, 1937. R. N.v BURCKHALTER ET AL k2,068,395

FILTER AND HEAT EXCHANGER Filed July 2l, 1952 3 Sheets-Sheet 2 O l 35. 356g i@ I2maniiis;isiiiiiiiiasiaiiiiiimiinzl 55 55 l 5 JQ/@e5 Mns/a@ Oswn/ :Janf 19', 1937. R. N. BuRKHALTl-:R ETVAL 2,068,395

FILTERv AND HEAT EXCHANGER FiledA July 2J., 1932 5 Sheets-Sheet 3 Patented Jan. 19, 1937 PATENT oFFIc FILTER AND 4HEAT EXCHANGER I Robert Nash Burckhalter and James Marshall Osburn,

Michigan City,

Ind., assignors to Michiana Products Corporation, a corporation of Indiana Application July 21, 1932', serial No. 623,787 11 claims. (01.-21o-v-1s5) 'I'he principal-object of this invention is to facilitate themanufacture of oil filters for use separately or in combination with heat exchangers and, in the main, this is accomplished by means ofa casting that will form the base of an oil lter, or aheat exchanger, or the bases or common base of an oil iilter and a heat exchanger, and will provide oil connections and by-passes whereby the flow is directed to suit the varying conditions.

Further objects and advantages of the invention will be revealed as the disclosure proceeds and the description is read in connection with the accompanying drawings showing specific forms de signed to meet selected requirements for heating cooling and filteringl oil in conventional internal combustion engines.

Fig. 1 is a diagrammatic side elevation of a conventional internal combustion engine equipped according to this invention;

Figs. 5 and 6 are transverse sections taken on the lines 5-5 and Ii-6, respectively, of Fig. 2; Figs. 7 and 8 are vertical sections taken on the lines 1-1 and 8-8, respectively, of Fig. 6;

Figs. 9 and l0 are sections similar to Figs. 2 and 6, showing the same base assembled to form an oil filter only, and illustrating a different connection for the outlet of oil;

Figs. 11 and 12 are perspective views of the base casting shown separately;- v

Fig. I13 is a plan View of the same; and Figs. 14 and 15 are plan and elevation oi a modified form of base casting.4

But these drawings and the speciiic descriptionthat follows are used for the purpose of disclosure only, for the substance of the inventionmay be embodied in many other forms. I

General description Fig. 1 shows an internal combustion engine I0 `equipped with a radiator II and a pump I2 for circulating cooling water through the. radiator and the cylinder jackets I3. 'Ihe commercial unit supplied by this vinvention includes a base casting I 4, surmounted by a heat exchanger I5 for the lubricating oil, which is connectedv in series with an oil illter I6,'depending from the base I4.

The heat exchanger I5 is also connected in series `of the base I4, where it is held by bolts 36.

with the water cooling system-by the pipes I1 and I8, whereby the oil in the lubricating system and the water inthe cooling system 'interchange heat.

Specific description -a centrally located bore 22 to receive a bolt 23 (Figs. 3 and 6) having its threaded inner end 24 15 receivedin a reenforced portion 25 of the engine casing. In eiiect, this bolt becomes a stud projecting from the casing upon which the base casting is mounted and made fast by a cap nut The base I4 is drilled and tapped at 2l (at the 20 right in Figs. 2 and 6) to receive a nipple 28, by which oil from the pump is led into the treating apparatus. The inlet thus formed is turned ver. tically by a bore 29 (Figs. 2 and 11) leading out 25 through the top of the base-to the heat exchanger.- The heat exchanger element 30 selected for this illustration resembles the familiar honeycomb radiator in that it is composedof hexagonal tubes 3I enlarged and soldered together at their ends 30 v32, and wrapped in a shell 33, which also forms headers 34 at each end, serving to distribute voil to the narrow meandering passages between the tubes.

The heat exchanger element is mounted within 35 a housing comprising a. generally six-sided box, the bottom 35 of which is machined to iit the top The left end 3l (Fig. 2) of the housing is made removable to permit the heat exchanger element 40 l to be inserted. Both this removable end and the opposite iixed end 38 of the housing are provided `top 44 vhas a similarpad 45 for connection with 50 .the outlet pipe I3. f

The vertical bore 29 of the base communicates .with a registering vertical bore 46 (Fig. 2) in the,

heat exchanger housing, which iscontinued' through a horizontal bore 41 and a vertical bore 55 v to an opening all leading into the right heacer 323 (Fig. 2). An opening hij@ leading out of the left hea-der Srl, communicates with the vertical passage el in the removable end si which has a lateral section registering with the horizontal here terminating in the vertical here which registers with a Vertical bore leading through the hase it, to communicate with the filter proper.

The filter includes a. shell or casing having its upper end received Within the groove of, the harige hwhere it is secured oy a cap nut threaded onto a tuhe the upper end of which is seated in the threaded boss of the-hase. The ilter element is illustrated as a barrel-shaped screen 53 extended between two headers li@ car riecl oy the tube lil. rShe form of the lilter element and also the heat exchanger element is not the essence of this invention, and for that reason details are omitted. it will he suicient to say that oil to he filtered enters the casing at the outside, passes through the filter element into the perforated tube 5l". The upper end of this tube communicates with. a counter bore il@ in the hase casting, and this, in turn, communicates with an outlet here Eil, (Fig. Gl, tappetiA to receive the nipple @il by which the oil connection is made to the hearing header, or such other point oi delivery as is desired.

From this description it follows that oil delivered from the pump enters through the nipple 2s (Figs. 2 and 6), rises through the bores 2s, fi, and ttl (Fig. 2l, to the heat exchanger element 31h, which delivers it through the bores 5l, 52, sand 5t, to the filter chamber at the outside of the lter element E8. Passing through this to the tube Eil, the oil rises into the counter bore il@ and passes through the outlet Sl tothe nipple @2, from and thence out at the top, to the cylinder jackets.

In order to provide a lay-pass for shunting out the heat exchanger when, for any reason, the resistance therein becomes too great, the base casting is provided at the right (Fig. 6) with a horizontal bore S3, communicating with the-vertical bore 2%, and also another vertical bore Sli, leading directly into the lter casing. A hall Valve 65 normally held against a seat liti by a spring El adjustahly compressed by a-screw 63, normally prevents flow from the bore 29 to the bore St, hut when 'the diierence in pressure at the opposite sides of the heat exchanger reaches apredeterlfitti-ined value, the valve E5 will be unseated, and

the oil will flow directly from the inlet ripple 2E to the filter without passing throtgh the heat exchanger. k

At the left (Fig. 6) the base is also provided with a. here SS, connecting the Vertical bore 5% with a horizontal. bore il to shunt oil directly` I or the filter, or both, may loe shunted out accordm ing to the conditions obtaining in the system.

In some instances the engine maker Wishes to buy an oil filter and, at the same time, make proaoeaaee vision for later introducing a heat exchanger into the system. With the construction thus far described this is readily accomplished, as shown in Fig. 9, where the heat exchanger in its entirety is replaced by a plate l@ which closes the passages and in the 'oase casting it. Theeiect is the same as if the heat exchanger element was clogged, hence, the bypass at the right in Fig 6 leads the entering oil into the lter, through which it passes in the normal way, and then continues to the hearings. When the engine maker is ready for the heat exchanger all that is necessary is torernove the plate 'i6 and substitute 'the heat exchanger, as shown in Figs. 2 and 3.

Where constant use or" the ley-pass is objectionable plate l@ can have a passage connecting itil.

and all (Fig. 2.)

In Figs. 9 and l0 there is also shown a variation in the outlet connection, the passage tl and the nipple 62 being omitted, and the main securing holt being provided with a central bore 'il communicating through openings 'it with the counter bore @it of the hase casting. This here 'el can be connected by internal piping or internal passages, with the hearing header, or any other point of delivery.

'While the use of a single bolt to secure the filter or the combined lter and heat exchanger in place on the engine tends to great simplicity, in some instances a plurality of bolts will be desireci. Figs. 14 and l5 show a modification oi the base casting to meet this situation. The modification consists chiely in providing perforated lianges 'i9 to receive .bolts for clamping the machined surface il@ 'against a machined pad, (not shown) on the engine casing, or other support.

rEhe arrangement of the passages and by-passes is substantially the same as in the other forni, except that the central pore 8l may he used for an outlet and the lateral bore 32 may be used for an inlet, whereby all exposed piping for oil is eliminated.

In some instances a purchaser will desire a heat exchanger with provision for adding a lter later,

in which case the housing for the heat exchanger can be mounted on. the base casting, as illustrated in Figs. 2 and 3, and the lter replaced by a closing plate made fast by a bolt threaded into the boss 2i. Installing the filter later then becomes a simple matter by removing this bolt and closure Ml may he replaced, by a solid block, and further simplicity may be had by connecting such a pattern directly to the pattern for the housing of the heat exchanger whereby the base and the housing could he cast in one piece. i

It will loe apparent that the invention makes production of `combined filters and heat exchangers, or `filters, or heat exchangers, a very simple matter.

The particular forni shown was designed to obtain simplicity and compactness under one set of conditions. Other conditions -will Warrant appropriate changes. Even a desire to have ltered oil only in the heat exchanger would justify oonsiderahle rearrangement, and putting the lter on top would be of advantage in cold weather.

We claim as our inventionz-"hl. lin an oil treating apparatus, a base casting having inlet and outlet passages, an interior chamber communicating with the outlet passage and a vertical through passage, a heat exchanger 75 mounted above the base and having inlet and outlet passages registering, respectively, with the inlet and through passages of the base, and a lter attached to the lower face of the base and receiving from its through passage and discharging into its interior chamber.

2. In oil treating apparatus, a base casting having passages for oil, aheat exchanger element having upwardly extending passages for water and laterally extending passages for oil, a casing for the element mounted on top of the base, and having oil passages connecting the oil passage in the element with those in the base and having water passages communicating with those in the y element.

3. In an oil treating apparatus, in combination, a base` adapted for attachment to a support, a casing mounted on the base and having an inlet and an outlet for water, a heat exchanger element interposed between such inlet and outlet and having through juxtaposed oil and Water passages, ducts incorporated in the casing for leading oil to and from the element, an oil filter carried by the base, the base having an inlet for oil communicating with the leading-in oil duct of the casing, a duct connecting the leading-cutoil duct of the casing with the filter, and an outlet for oil communicating with the filter.

4. In oil treating apparatus, a base, a heat exchanger carried on the base above and comprising a housing having an inlet and an outlet for water, a heat exchanger element within the housing having surfaces exposed to water and other surfaces exposed to oil to be treated, a filter carried by and below the base and comprising a casing and an oil lter element therein, the base and housing providing passages for oil to circulate through the heat exchanger and the filter in series, the base also having by-passes across the heat exchanger and the filter.

5. In oil treating apparatus, a base having inlet and outlet passages for oil, a heat exchanger comprising a housing rising from the base, having one end open and provided with an inlet for water adjacent its bottom and an outlet for water at the top, a heat exchanger unit within the housing, and havingpassages for oil to flow in at one end and out at the other, and passages for waterl transverse to the passages for oil, a closure for the open end of the housing having an oil passsage communicating with the oil passages in the heat exchanger element, the closed end of the housing having a cored passage leading to the opposite end of the exchanger element, both of the iastnamed oil passages communicating with the oil passages of the base.

6. In an oil treating apparatus, a base plate for attachment to a support, a heat exchanger attached to one face of the plate and having independent oil and water passages therethrough, a lter attached to the opposite face of the plate, the plate being ported for the' admission of oil from outside the apparatus and its delivery to one of the attached devices, for the transfer of oil from such device-to the other attached device and for its discharge from such device to the exterior of the apparatus.

voil Vdirectly from and discharging oil directly to the exterior of the apparatus respectively, a heat charge passages, other passages communicating respectively with the receiving and discharge passages and leading, respectively, through such faces, and a through passage, the opposite faces of the base being adapted for attachment thereto ofA oil treatingy elements cooperating with the through passage and, respectively, with the receiving and discharge passages.

9. In an oil treating apparatus, a base plate adapted to be attached to a support and'having ports for admitting oil to the apparatus and discharging oil from the apparatus, a heat exchanger and a lter attached to opposite faces of the plate, passages leading from the oil-admitting port through one of the attached members to the other member, and passages in the plate leading from the last-mentioned member to the oil discharge port.

10. A baseadapted to be attached to a supporting wall and having a pair of oppositely facing surfaces providing areas adapted to have oil treating elements secured thereto, a passage through the base within said areas adapted to place said elements in communication, an oil inlet port and an oil outlet port in portions of the base outside of said areas,'and passages in the base opening through said areas and communicating with said ports.

11. A base adapted to be attached to a supporting wall and having a pair of oppositely facing surfaces providing areas adapted to have oil treating elements secured thereto, a passage through the base within said areas adapted to place said elements in communication, an oil inlet port and an oil outlet port in portions of the base outside of said areas, a passage in the base opening throughone of said areas and communicating with one of said ports, and a separate passage in the base opening through the other area and communicating with the other port.

ROBERT NASH BURCKHALTER. JAMES MARSHALL OSBU'RN. 

